Ultrahigh-speed cycloid hydraulic motor

Abstract

The invention discloses an ultrahigh-speed cycloid hydraulic motor which comprises a transmission shaft. A middle body and a rear cover are sequentially installed on the transmission shaft; a rotor-stator pair is arranged between the rear cover and the transmission shaft; the rotor-stator pair is located at the front end of the rear cover, and comprises an outer rotor and an inner rotor; the innerrotor is fixedly connected with the transmission shaft; the outer rotor is located in the rear cover; the front part of the transmission shaft is sleeved with a spring; the spring makes contact witha movable ring fixed to the end of the transmission shaft; the other end of the movable ring makes contact with a static ring; the static ring is installed in the front cover; and the front cover is connected with the middle body. The ultrahigh-speed cycloid hydraulic motor provided by the invention adopts the special cycloid rotor-stator pair, and an axial clearance difference of the rotor and the stator cannot be generated, so that the difficulty of paired match grinding of the rotor and the stator is greatly reduced, the rotor-stator pair is arranged in the rear cover and connected with themiddle body, and traditional output shaft parts such as a partition disc and a stator sleeve are omitted; and a novel flow distribution system has the advantage of high-speed movement, so that the rotating speed of the novel flow distribution system is multiple times that of a traditional motor.

Description

technical field [0001] The invention relates to a hydraulic motor, in particular to an ultra-high-speed cycloid hydraulic motor. Background technique [0002] The traditional cycloidal hydraulic motor is a low-speed and high-torque motor. Because of its extremely low speed, it is used in mobile and portable transmission hydraulic systems, such as: plant protection machinery and power tools. have a greater impact. The stator of the traditional cycloidal hydraulic motor is fixed. When the rotor rotates in the inner cavity of the stator, in order to ensure the flexible rotation of the rotor, there must be a certain axial gap between the rotor and the stator, but the requirement for this axial gap is extremely strict. If the gap is too large, the internal leakage of the motor will be large and the volumetric efficiency will be poor; if the gap is small, the rotor will be difficult to rotate, the mechanical resistance will increase, and the mechanical efficiency will be low. Eve...

AI Technical Summary

Problems solved by technology

The stator of the traditional cycloidal hydraulic motor is fixed. When the rotor rotates in the inner cavity of the stator, in order to ensure the flexible rotation of the rotor, there must be a certain axial gap between the rotor and the stator, but the requirement for this axial gap is extremely strict. If the gap is too large, the internal leakage of the motor will be large and the volumetric efficiency will be poor; if the gap is small, the rotor will be difficult to rotate, the mechanical resistance will increase, the mechanical efficiency will be low, and even the rotor cannot rotate in the inner cavity of the stator, resulting in the motor not working

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